Add monster sound

assets/sfx_monster.raw

@@ -0,0 +1 @@
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main.c

@@ -261,6 +261,8 @@ struct
   uint8_t spriteAnimationFrame;
   uint8_t explosionSoundPlayed;  /**< Prevents playing too many explosion sounds
                                  at once */
+  uint8_t monsterSoundPlayed;
+
   RCL_RayConstraints rayConstraints;
   uint8_t keyStates[SFG_KEY_COUNT]; /**< Pressed states of keys, each value
                                     stores the number of frames for which the
@@ -448,6 +450,13 @@ void SFG_playSoundSafe(uint8_t soundIndex, uint8_t volume)
     
     SFG_game.explosionSoundPlayed = 1;
   }
+  else if (soundIndex == 5) // monster sound
+  {
+    if (!SFG_game.monsterSoundPlayed)
+      SFG_playSound(soundIndex,volume);
+ 
+    SFG_game.monsterSoundPlayed = 1;
+  }
   else
     SFG_playSound(soundIndex,volume);
 }
@@ -1717,7 +1726,9 @@ uint8_t SFG_distantSoundVolume(RCL_Unit x, RCL_Unit y, RCL_Unit z)
   if (distance >= SFG_SFX_MAX_DISTANCE)
     return 0;
 
-  return 255 - (distance * 255) / SFG_SFX_MAX_DISTANCE;
+  uint32_t result = 255 - (distance * 255) / SFG_SFX_MAX_DISTANCE;
+
+  return (result * result) / 256;
 }
 
 void SFG_createExplosion(RCL_Unit x, RCL_Unit y, RCL_Unit z)
@@ -2059,6 +2070,16 @@ void SFG_monsterPerformAI(SFG_MonsterRecord *monster)
         state == SFG_MONSTER_STATE_GOING_SW)
       coordAdd[1] = add;
 
+    if ((coordAdd[0] != 0 || coordAdd[1] != 0) && SFG_random() <
+        SFG_MONSTER_SOUND_PROBABILITY)
+      SFG_playSoundSafe(5,
+          SFG_distantSoundVolume( 
+          SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
+          SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),
+          SFG_floorHeightAt(
+            SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
+            SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1]))) / 2);
+
     if (add)
       state = SFG_MONSTER_STATE_IDLE;
   }
@@ -2455,7 +2476,15 @@ void SFG_updateLevel()
         monster->stateType = (monster->stateType & SFG_MONSTER_MASK_TYPE) |
           SFG_MONSTER_STATE_DYING;
 
-        SFG_playSoundSafe(2,255);
+        uint8_t volume = SFG_distantSoundVolume( 
+          SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
+          SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),
+          SFG_floorHeightAt(
+            SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
+            SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1])));
+
+        SFG_playSoundSafe(2,volume);
+        SFG_playSoundSafe(5,volume);
       }
       else if (state != SFG_MONSTER_STATE_INACTIVE)
       {
@@ -3132,6 +3161,7 @@ void SFG_gameStepMenu()
 void SFG_gameStep()
 {
   SFG_game.explosionSoundPlayed = 0;
+  SFG_game.monsterSoundPlayed = 0;
 
   for (uint8_t i = 0; i < SFG_KEY_COUNT; ++i)
     if (!SFG_keyPressed(i))

settings.h

@@ -194,12 +194,17 @@
 */
 #define SFG_BLINK_PERIOD 500
 
+/**
+  Probability (0 - 255) of how often a monster makes sound during movement.
+*/
+#define SFG_MONSTER_SOUND_PROBABILITY 64
+
 //------ developer/debug settings ------
 
 /**
   Developer cheat for having infinite ammo in all weapons.
 */
-#define SFG_INFINITE_AMMO 0
+#define SFG_INFINITE_AMMO 1
 
 /**
   Developer cheat for immortality.

sounds.h

@@ -301,6 +301,60 @@ SFG_PROGRAM_MEMORY uint8_t SFG_sounds[][SFG_SFX_SIZE] =
 136,136,136,136,136,136,136,136,136,136,135,119,119,119,119,119,119,119,119,119,
 119,119,119,136,136,136,136,136,136,136,136,136,136,136,136,136,136,136,136,136,
 136,136,136,136,136
+  },
+  { // 5, robot/monster sound (beep)
+136,120,120,120,136,136,136,136,120,120,135,136,136,136,120,136,136,119,136,
+136,120,136,119,120,136,136,136,120,136,119,120,136,135,119,136,135,120,136,119,
+119,136,136,119,119,120,136,136,135,119,119,136,136,136,119,119,119,136,119,120,
+136,136,135,119,120,136,136,119,103,136,136,120,135,119,120,136,118,119,136,136,
+136,119,119,136,136,119,120,135,103,136,136,119,136,135,119,120,136,119,120,135,
+119,120,136,135,119,119,135,120,136,135,119,136,136,119,136,119,120,136,135,119,
+119,119,136,136,119,120,119,136,136,119,119,119,119,137,136,120,135,102,120,136,
+136,119,119,120,135,120,136,119,120,136,119,136,136,135,119,119,119,136,136,134,
+104,136,136,119,119,119,136,135,120,136,120,119,119,119,135,136,136,136,119,119,
+119,136,136,135,119,136,135,119,120,136,135,119,120,135,136,136,119,136,119,120,
+136,135,119,120,135,119,136,135,119,136,136,136,120,119,119,136,119,120,136,135,
+120,135,102,121,169,118,87,137,151,85,121,186,118,102,119,136,152,118,120,136,
+135,119,120,120,136,136,136,136,101,103,153,152,135,102,120,136,135,102,120,153,
+135,119,119,135,119,119,136,135,119,119,119,120,136,135,119,119,136,136,136,119,
+119,119,136,119,119,135,120,135,119,119,120,135,120,136,119,119,136,136,135,119,
+135,119,136,136,136,136,135,119,120,136,119,120,136,118,119,137,135,119,120,135,
+119,136,135,119,120,152,119,136,119,120,135,136,119,136,119,136,135,120,152,119,
+120,136,119,119,154,150,103,152,119,120,153,135,102,138,135,136,119,153,101,121,
+151,120,135,136,118,137,151,103,120,152,102,138,134,88,154,151,103,153,118,104,
+137,135,120,119,153,117,105,167,102,120,136,119,137,134,87,153,135,120,152,102,
+103,137,151,119,153,133,87,169,100,104,153,152,102,103,153,135,119,136,119,120,
+136,119,119,135,119,120,136,119,119,119,120,136,135,122,222,219,132,51,68,87,
+171,187,186,134,50,52,104,172,203,186,116,33,54,139,188,204,151,67,52,87,
+155,220,152,136,98,17,73,223,218,136,100,34,53,155,187,188,185,82,18,71,
+155,205,203,150,65,19,86,156,238,201,100,50,36,122,205,220,167,66,34,88,
+171,204,201,102,84,51,71,155,221,184,118,66,19,107,238,202,152,99,1,72,
+172,204,218,116,51,36,104,172,222,183,83,35,87,120,190,234,118,100,34,70,
+155,237,170,167,50,52,104,155,221,168,100,51,69,103,190,236,134,82,2,120,
+138,223,199,102,82,19,105,204,204,185,82,52,85,106,216,103,153,117,104,134,
+104,152,118,103,137,135,136,136,135,102,119,121,151,104,152,84,104,135,154,134,
+103,136,119,135,120,135,120,135,136,119,136,118,86,153,118,137,134,137,117,105,
+153,136,117,103,136,120,152,119,119,136,135,136,135,104,152,137,136,119,119,120,
+119,135,86,156,204,253,150,67,35,87,155,222,200,84,52,51,89,206,236,186,
+115,34,69,104,206,220,150,84,67,53,141,254,168,118,50,53,104,188,186,151,
+84,68,87,172,220,169,135,66,53,120,154,188,203,116,52,84,71,189,219,169,
+116,34,53,122,207,236,167,66,35,86,155,221,184,101,66,53,137,172,204,169,
+116,35,69,105,190,219,150,83,51,71,172,204,203,149,49,35,104,172,238,200,
+100,51,69,105,205,218,134,83,52,88,172,204,185,117,84,51,104,172,204,185,
+100,51,52,106,221,203,152,101,50,54,139,204,186,150,67,68,86,156,221,202,
+117,34,52,122,200,135,119,120,136,118,103,137,152,135,119,119,136,152,118,103,
+136,135,119,136,135,120,135,118,120,135,103,154,151,102,102,119,136,154,169,118,
+102,119,119,120,152,118,119,136,154,151,101,121,152,102,136,120,136,119,119,119,
+120,136,118,103,137,152,119,119,136,136,119,119,118,119,120,136,153,135,103,136,
+119,136,136,119,119,120,136,136,135,136,119,119,120,136,119,136,135,120,135,119,
+120,136,135,136,119,119,136,136,119,136,135,119,136,119,120,136,135,119,136,119,
+119,136,135,119,118,120,153,153,151,118,119,119,119,136,135,119,136,136,136,135,
+120,136,135,119,119,119,136,136,119,120,135,119,136,136,119,119,119,119,137,152,
+135,119,119,119,136,136,119,119,119,136,136,136,119,120,136,119,119,119,136,136,
+119,119,119,136,136,136,135,119,136,119,120,136,119,136,135,120,119,136,135,120,
+135,119,136,119,136,135,119,136,119,119,120,136,136,119,120,135,136,135,120,135,
+119,136,119,136,135,136,119,120,136,120,136,120,136,119,135,119,136,119,136,135,
+136,119,120,135,120
   }
 };